Joule Thief

Hi, today I'm posting about Joule Thief.
Joule thief is a small voltage booster.
Here is a video that explain how it works:

If you'd like to build one here is the parts list:
-transistor 2n3904(or equivalent like 2n2222)
-ferrite ring (toroid)
-LED
-1k ohm resistor
-some wires

Here is a simple diagram:

 

Here are other photos of the project:

 I hope you like this post, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami

Coin roll slow motion

Simple coin roll trick filmed at 120fps using a Casio EX-ZR1000.
I'm not really good in that trick but I tried.
Here is the video, I hope this will be helpful for everyone who wanna learn this nice trick :)

I hope you like this post, if you have any question please comment or send me an e-mail to damianoandre@gmail.com

Bye, Dami

P.S.: probably in a couple of weeks I'll post about flyback transformers, tesla coil and jacob's ladder.

Open source game engine: maratis3d

Hi, today i'm posting about a really versatile and easy to use open source game engine, it's called maratis3d.
I think it's a good point to start game development, it supports many cool features like lua scripting, full blender integration (with an addon), sounds, texts and many more...
The only bad thing is that it has a really poor documentation.
I'll not write everything about this game engine because I think it's really noob friendly and with just some tutorials that you can find on youtube you should make a nice little game.
I hope you'll enjoy playing around with that, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami